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Cisco Bug: CSCul49976 - High CPU usage in Unity Connection when Outlook 2013 is used

Last Modified

Nov 27, 2020

Products (1)

  • Cisco Unity Connection

Known Affected Releases


Description (partial)

High CPU utilization in Unity Connection

Certain IMAP requests from third party clients to Unity Connection will have high CPU reported on Unity Connection.

This has only been observed in the field with customers when using Outlook 2013 (with KB2837618 installed) tries to  make an IMAP connection to Unity Connection.

Look for this line in the IMAP traces:
Request: xuf2 UID SEARCH UID 45:4294967295 SINCE

Related Community Discussions

CSCtd17052 - Unity Connection - Unsupported IMAP clients causes high CPU utilization - 1
Looks like issue is not fixed in Version I noticed our most of the customers are using outlook 2010 does not have any issue only few customer have outlook 2013. As soon as they start outlook 2013 cpu spikes up. Means outlook 2013 also comes in 'Unsupported Client'. The alarms after cpu climps is: Host CPU 1, Error:, threshold of cpu_critical exceeded: current value 100.00
Latest activity: Dec 02, 2013
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